Inside IR35 Take Home Pay Calculator (UK 2025/26)

Navigating IR35 legislation is essential for UK contractors in tech, finance, healthcare, and consulting. If your contract is deemed inside IR35, you're taxed like an employee, facing deductions for Income Tax, National Insurance, and umbrella company fees. Our free Inside IR35 Take Home Pay Calculator for the 2025/26 tax year provides instant estimates of your net income when working through an umbrella company in the United Kingdom.

Use this IR35 calculator to plan your finances as a freelancer, IT contractor, or consultant in cities like London, Manchester, or Birmingham. Understand your take home pay inside IR35, optimize expenses, and compare with permanent employment salaries.

Key Insight: Inside IR35 contractors typically retain 60-70% of their gross rate after taxes and fees.

Our IR35 take home calculator helps with:

  • Estimating net monthly income from hourly or daily rates
  • Calculating deductions: Income Tax (20%/40%), Employee NI (8%/2%), Employer NI (15%)
  • Factoring in umbrella fees and Apprenticeship Levy (0.5%)
  • Planning for roles in software development, engineering, or public sector
  • Comparing inside IR35 vs permanent employment earnings

Related: Explore our Outside IR35 Calculator, Umbrella vs Limited Company Guide, or IR35 Status Checker.

Inside IR35 Take Home Pay Calculator

Enter your details to estimate your take home pay inside IR35. Assumes umbrella company setup, £25/week fees, and 2025/26 tax rates.

Why Use Our Inside IR35 Calculator?

Our IR35 take home pay calculator is tailored for UK contractors, offering precise estimates for the 2025/26 tax year. Whether you're a software developer in London, a project manager in Manchester, or a healthcare contractor in Birmingham, this tool helps you:

  • Estimate net pay after Income Tax, NI, and umbrella fees
  • Plan for contractor tax with inputs like pension contributions and expenses
  • Compare inside IR35 vs permanent employment earnings
  • Understand deductions for roles in tech, finance, or public sector

Since the IR35 reforms in April 2021, many contractors are classified as inside IR35, especially in the public sector. This tool ensures you know your take home pay and can plan effectively.

Tips to Maximize Your Take Home Pay

Tip: Optimize expenses and pension contributions to reduce taxable income and boost your net pay.

  • Claim Allowable Expenses: Include mileage, travel, or subscriptions to lower taxable income.
  • Pension Contributions: Contributions reduce your taxable income, increasing take-home pay.
  • Verify Tax Code: Ensure your personal tax code (e.g., 1257L) is correct.
  • Choose Umbrella Wisely: Compare umbrella company fees to minimize costs.
  • Check IR35 Status: Use an IR35 status checker to confirm your contract’s status.

For more, see our guides on Outside IR35 Calculator, Umbrella vs Limited Company, or Contractor Tax Strategies.

FAQs

What is an Inside IR35 Calculator?
An inside IR35 calculator estimates your net income after taxes, National Insurance, and umbrella fees for UK contractors under IR35 rules in 2025/26.

How much tax do I pay inside IR35?
Expect 20-30% of gross revenue in taxes, including 15% Employer NI, 8%/2% Employee NI, Income Tax (20%/40%), and umbrella fees.

Is this calculator accurate for 2025/26?
Yes, it uses 2025/26 UK tax rates. Consult a tax professional for personalized advice.

Why use an umbrella company?
Inside IR35 contractors use umbrella companies for simplified payroll and HMRC compliance.

Note: For precise tax advice, visit HMRC’s IR35 guidance.

100 cm to mm Conversion

Need to convert 100 cm into mm? Our free 100 cm to mm calculator provides instant results: 100 cm equals 1000 mm. This conversion is essential for precise measurements in sewing, furniture design, construction, and more.

Use our 100 cm to mm calculator, explore the conversion chart, and discover practical applications for measurements like fabric lengths or room dimensions.

Key Conversion: 100 cm = 1000 mm (exact metric standard)

Our 100 cm into mm tool helps with:

  • Fast 100 cm to mm calculations for accuracy
  • Measurements for sewing and fabric cutting
  • Precision in furniture and interior design
  • Construction and engineering projects
  • Metric-based tasks in education or DIY

Related Tools: Centimeters to Millimeters, Millimeters to Centimeters, Inches to Centimeters, Length Converter, or learn about Metric vs. Imperial System.

100 cm to mm Converter

Enter any value like 100 cm into mm (100 cm = 1000 mm). Supports decimals for precision.

100 cm to mm Conversion Chart

Quick reference for 100 cm into mm and other common conversions:

Centimeters (cm)Millimeters (mm)Practical Example
110Width of a paperclip
10100Width of a CD case
50500Width of a standard door
1001000Length of a meter stick or fabric roll
1501500Height of a small table
2002000Length of a sofa

Exact: 100 cm = 1000 mm. Try mm to cm for reverse conversions or explore length conversions in construction.

How to Convert 100 cm to mm Manually

100 cm to mm Formula

100 cm = 1000 mm

millimeters = centimeters × 10

Standard metric conversion used in sewing, construction, and design.

Step-by-Step: Converting 100 cm to mm

1

Start with centimeters

Example: 100 cm

2

Multiply by 10

100 × 10 = 1000

3

Get result

100 cm = 1000 mm

Tip: Use a ruler for accuracy. Learn more at How to Convert Units.

Why Convert 100 cm to mm?

Converting 100 cm to mm (1000 mm) is useful for:

  • Measuring fabric for sewing (e.g., 1000 mm for a dress length)
  • Specifying furniture dimensions in design plans
  • Construction tasks requiring metric precision
  • DIY projects like building shelves

Cm to mm ring size Calculator

Need a ring size calculator for cm to mm ring size or inches to ring size converter? Our free tool converts measurements like 2.75 inches ring size (≈69.85 mm, US size 10.5–11) for accurate jewelry sizing. Whether you’re measuring in cm, mm, or inches, our calculator and chart simplify the process for buying or designing rings.

Explore our ring size calculator cm and inches to ring size guide, perfect for jewelers, shoppers, and DIY enthusiasts.

Key Fact: 1 cm = 10 mm; 2.75 inches = 69.85 mm ≈ US ring size 10.5–11.

Our ring size calculator supports:

  • Fast cm to mm ring size conversions for jewelry
  • Accurate inches to ring size converter for US/UK/EU sizes
  • Precise measurements for custom ring designs
  • Shopping for rings online or in-store
  • Metric and imperial conversions for global use

Related Tools: cm to mm, mm to cm, Inches to mm, Length Converter, or explore Metric vs. Imperial System.

Ring Size Calculator (cm, mm, Inches)

Ring Size (US): Enter a value to calculate

Input cm, mm, or inches (e.g., 2.75 inches ring size ≈ US 10.5–11). Use our chart below for exact sizing.

Ring Size Chart: cm, mm, Inches

Convert cm to mm ring size or inches to ring size with this chart:

US Sizemm (Circumference)cm (Circumference)Inches (Circumference)Example
344.24.421.74Small ring finger
549.34.931.94Women’s average ring finger
754.45.442.14Men’s average ring finger
959.55.952.34Large ring finger
10.563.46.342.50Thumb ring
1164.66.462.54Large thumb ring
1369.76.972.752.75 inches ring size (e.g., oversized ring)

Note: Measure finger circumference; 2.75 inches ≈ 69.85 mm ≈ US size 10.5–11. Try cm to mm or inches to mm for more conversions.

How to Measure Ring Size (cm to mm or Inches)

Step-by-Step Guide

1

Measure finger circumference

Wrap a string around the finger, mark it, and measure in mm or inches (e.g., 2.75 inches).

2

Convert to mm

Inches × 25.4 = mm (e.g., 2.75 × 25.4 = 69.85 mm); cm × 10 = mm (e.g., 6.985 cm = 69.85 mm).

3

Find ring size

Match mm to the chart (e.g., 69.85 mm ≈ US size 10.5–11).

Tip: Measure in mm for precision. Learn more at How to Convert Units.

cm vs mm: Which Is Larger?

Confused about cm vs mm or wondering cm vs mm which is larger? This guide clarifies the difference between centimeters (cm) and millimeters (mm), two key metric units. A centimeter is larger, with 1 cm = 10 mm, making mm ideal for precise measurements and cm for general ones.

Explore our cm versus mm comparison, use our free converter, and check practical examples to understand their applications in crafts, engineering, and daily life.

Key Fact: 1 centimeter = 10 millimeters (exact metric standard). Centimeters are larger than millimeters.

Our cm vs mm guide helps with:

  • Understanding cm versus mm for accurate measurements
  • Choosing the right unit for technical drawings or DIY projects
  • Precision in jewelry, engineering, and scientific tasks
  • Metric system clarity for education and construction
  • Quick conversions with our dual-direction calculator

Related Tools: How many Cm in An Inch, Centimeters to Millimeters, Millimeters to Centimeters, Length Converter, Metric vs. Imperial System, or learn How to Convert Units.

cm vs mm Converter

Enter a value in either field to convert (e.g., 1 cm = 10 mm or 10 mm = 1 cm). Supports decimals for precision.

cm vs mm Comparison Chart

Understand cm versus mm with common conversions and examples:

Centimeters (cm)Millimeters (mm)Practical ExampleUse Case
0.11Thickness of a credit cardPrecision (jewelry, machining)
0.55Width of a pencil leadSmall parts design
110Width of a paperclipGeneral measurements (crafts)
220Diameter of a AA batteryDIY projects
550Width of a light switchConstruction measurements
10100Width of a CD caseFurniture measurements

Centimeters are larger; 1 cm = 10 mm. Use cm to mm or mm to cm converters for quick calculations.

cm vs mm: Key Differences

Which is larger? Centimeters are larger than millimeters. Since 1 cm = 10 mm, cm is used for bigger measurements like furniture or clothing, while mm is for precision tasks like jewelry or engineering. Example: A 10 mm paperclip is 1 cm wide.

Common Mistake: Mixing up the scale—always confirm whether mm or cm is needed for your project. Learn more at Length Conversion in Construction.

How to Convert cm vs mm

Conversion Formulas

Centimeters to Millimeters: mm = cm × 10

Millimeters to Centimeters: cm = mm ÷ 10

Standard metric conversions used in science, crafts, and engineering.

Step-by-Step Example

1

cm to mm

1 cm × 10 = 10 mm (e.g., paperclip width)

2

mm to cm

10 mm ÷ 10 = 1 cm (e.g., fingernail width)

10mm to cm Conversion | Calculator & Chart

Wondering how big is 10mm in cm? Our free 10mm to cm converter provides instant, accurate results for precise measurements in crafts, jewelry, engineering, and more. Knowing that 10 mm = 1 cm is essential for metric-based projects.

Use our 10mm in cm calculator, explore the conversion chart, and follow our guide to master 10mm cm conversions for everyday or professional tasks.

Key Conversion: 10 millimeters = 1 centimeter (exact metric standard)

Our 10 mm to cm tool helps with:

  • Quick 10mm to cm calculations for precision
  • Accurate conversions for technical drawings and designs
  • Small-scale measurements in jewelry and DIY projects
  • Scientific measurements in labs
  • Metric system tasks in education and engineering

Related Tools: Millimeters to Centimeters, Centimeters to Millimeters, Inches to Millimeters, Length Converter, or learn about the Metric vs. Imperial System.

10 mm to cm Converter

Enter any mm value like 10mm to see cm (e.g., 10 mm = 1 cm). Supports decimals for precision.

10mm to cm Conversion Chart

Quick 10mm in cm references and common conversions:

Millimeters (mm)Centimeters (cm)Practical Example
10.1Thickness of a credit card
50.5Width of a pencil lead
101Width of a standard paperclip or fingernail
151.5Diameter of a dime coin
202Diameter of a AA battery
505Width of a light switch plate
10010Width of a CD case
25025Length of a school ruler

Exact: 10 mm = 1 cm. Try our cm to mm converter for reverse calculations or explore length conversions in construction.

How to Convert 10mm to cm Manually

10 mm to cm Formula

10 millimeters = 1 centimeter

centimeters = millimeters ÷ 10

Standard metric conversion used globally in science, engineering, and crafts.

Step-by-Step: Converting 10 mm to cm

1

Begin with millimeters

Example: 10 mm

2

Divide by 10

10 ÷ 10 = 1

3

Get result

10 mm = 1 cm

Millimeters vs. Centimeters: When to Use Each

Use 10mm to cm for precise measurements like jewelry or small parts, while centimeters suit larger items like fabric. Common error: Misjudging scale—always verify! Learn more at How to Convert Units.

1 Centimeter to Millimeter Conversion | Calculator

Need to convert 1 centimeter to millimeter? Our free 1 centimeter to mm converter provides instant, accurate results for precise measurements in crafts, engineering, and daily tasks. Whether you're measuring small items or working on projects, understanding 1cm to millimeter is key in the metric system.

Discover our 1 centimeter to millimeter calculator, detailed chart, and easy guide. This conversion is vital in manufacturing, design, education, and more.

Key Conversion: 1 centimeter = 10 millimeters (exact metric standard)

Our 1 cm to mm tool assists with:

  • Fast 1 centimeter to millimeter calculations for accuracy
  • Precise conversions for drawings and blueprints
  • Small measurements in DIY and crafts
  • Lab and scientific applications
  • Metric-based education and engineering projects

Related Guides: Centimeter to Millimeters, Centimeters to Inches, Metric vs. Imperial, or reverse with Millimeters to Centimeters.

1 cm to mm Converter

Input any value like 1 cm to see mm (e.g., 1 centimeter to mm = 10 mm). Supports decimals for precision.

1 Centimeter to Millimeter Conversion Chart

Quick 1cm to millimeter references and more common conversions:

Centimeters (cm)Millimeters (mm)Practical Example
0.11Thickness of a credit card edge
0.55Width of a pencil lead
110Width of a standard paperclip or fingernail
1.515Diameter of a dime coin
220Diameter of a AA battery
550Width of a light switch plate
10100Width of a CD case
25250Length of a school ruler
50500Width of a standard doorway

Exact: 1 centimeter = 10 millimeters. For reverse, try our mm to cm tool.

How to Convert 1 Centimeter to Millimeter Manually

1 cm to mm Formula

1 centimeter = 10 millimeters

millimeters = centimeters × 10

Globally standard in metric systems for tech, construction, and science.

Step-by-Step: Converting 1 cm to mm

1

Begin with value

Example: 1 centimeter

2

Multiply by 10

1 × 10 = 10

3

Get result

1 cm = 10 mm

Kilograms to Milligrams Converter (kg to mg)

Converting kilograms to milligrams (kg to mg) is important for precise measurements in medicine, chemistry, nutrition, and more. Since 1 kilogram equals 1,000,000 milligrams, this conversion helps when working with very small units of weight.

Use our free kg to mg converter, quick conversion chart, and step-by-step guide to calculate values like 5 kg to mg or 5.6 kg to mg instantly. This guide also answers questions like “How many milligrams in a kilogram?”

Key Conversion: 1 kilogram = 1,000,000 milligrams (exact)

Our kg to mg converter is useful for:

  • Quick medical dosage calculations
  • Precise chemistry and lab measurements
  • Nutritional and supplement tracking
  • Educational and engineering projects

Related: Explore our Kilograms to Grams, Grams to Milligrams, and Grams to Kilograms converters.

KG to MG Converter

Example: 1 kg to mg = 1,000,000 mg | 5.6 kg = 5,600,000 mg

Kilograms to Milligrams Conversion Chart

Here are some common kg to mg conversions:

Kilograms (kg)Milligrams (mg)Example
0.1100,000Vitamin dosage
0.5500,000Small lab sample
11,000,000Standard weight
22,000,000Food packaging
55,000,000Supplement batch
5.65,600,000Scientific experiment
1010,000,000Industrial sample

Note: 1 kilogram = exactly 1,000,000 milligrams.

How to Convert Kilograms to Milligrams Manually

KG to MG Formula

1 kilogram = 1,000,000 milligrams

milligrams = kilograms × 1,000,000

This formula is commonly used in medicine, nutrition, and laboratory science.

Step-by-Step Example

1

Start with kilograms value

Example: Convert 5.6 kilograms to milligrams

2

Multiply by 1,000,000

5.6 × 1,000,000 = 5,600,000

3

Result in milligrams

5.6 kg = 5,600,000 mg

Frequently Asked Questions (FAQ)

How many milligrams are in a kilogram?

There are 1,000,000 milligrams in 1 kilogram.

How do I convert kilograms to milligrams?

Simply multiply the number of kilograms by 1,000,000. Example: 5 kg × 1,000,000 = 5,000,000 mg.

What is 5 kg in milligrams?

5 kilograms is equal to 5,000,000 milligrams.

What is 5.6 kg in milligrams?

5.6 kilograms is equal to 5,600,000 milligrams.

Kilograms to Grams Converter – Formula, Chart & Examples

Converting kilograms to grams (kg to g) is essential for precise measurements in cooking, science, fitness, and more. Whether you’re weighing ingredients for a recipe, measuring lab samples, or tracking luggage weight, our kilograms to grams converter delivers instant, accurate results.

Explore our free kg to g calculator, detailed conversion chart, and step-by-step guide to master conversions for everyday tasks or professional projects. Learn why this metric conversion is critical in fields like nutrition, engineering, and education.

Key Conversion: 1 kilogram = 1,000 grams (exact)

Our kg to g converter helps with:

  • Quick kilograms to grams calculations for recipes
  • Accurate measurements for scientific experiments
  • Weight tracking for fitness or medical purposes
  • Luggage or package weight conversions for travel
  • Metric system-based projects in engineering or education

Related: Explore our Grams to Milligrams, Grams to Pounds, or Metric vs. Imperial System guides.

KG to G Converter

Enter any kg value to see the g equivalent (e.g., 1 kg to g = 1,000 g).

Kilograms to Grams Conversion Chart

Common kg to g conversions for everyday use:

Kilograms (kg)Grams (g)Practical Example
0.1100Small fruit (e.g., an apple)
0.5500Bag of flour
11,000Liter of water
22,000Medium laptop
55,000Small dumbbell
1010,000Suitcase for travel
2525,000Large dog’s weight
5050,000Average adult’s body weight

Note: 1 kilogram = exactly 1,000 grams (metric standard). Use our Grams to Kilograms converter for reverse calculations.

How to Convert Kilograms to Grams Manually

KG to G Formula

1 kilogram = 1,000 grams

grams = kilograms × 1,000

This standard metric conversion is used globally in cooking, science, and industry.

Step-by-Step Example

1

Start with kilograms value

Example: Convert 3.75 kilograms to grams

2

Multiply by 1,000

3.75 × 1,000 = 3,750

3

Result in grams

3.75 kg = 3,750 g

Gram to Pound Converter – Formula & Examples

Convert grams to pounds instantly for cooking, shipping, fitness tracking, and scientific measurements. Our grams to pounds calculator provides precise conversions between metric (grams) and imperial (pounds) units.

Key Conversion: 1 pound = 453.592 grams (exact)

Common uses for g to lb conversion:

  • Shipping and package weights
  • Baking and cooking measurements
  • Body weight tracking (for fitness/health)
  • Scientific and industrial measurements

Grams to Pounds Calculator

Try: 454g = 1 lb | 1000g ≈ 2.205 lb | 28.35g = 1 oz

Grams to Pounds Chart

Quick-reference table for everyday conversions:

Grams (g)Pounds (lb)Pounds & OuncesCommon Equivalent
100g0.220 lb3.5 oz½ cup butter
454g1 lb1 lb 0 ozStandard loaf of bread
500g1.102 lb1 lb 1.6 ozPack of ground coffee
1000g2.205 lb2 lb 3.3 oz1 kilogram (kg)
1500g3.307 lb3 lb 4.9 ozLarge bag of sugar

Note: 1 lb = 453.59237 g (exact international avoirdupois pound)

How to Convert Grams to Pounds

Conversion Formula

1 gram ≈ 0.00220462 pounds

pounds = grams ÷ 453.592

For quick estimates: Divide grams by 454 (close to 453.592).

Step-by-Step Example

1

Start with grams

Convert 2000g to pounds

2

Divide by 453.592

2000 ÷ 453.592 ≈ 4.409

3

Result

2000g ≈ 4.409 lb (or 4 lb 6.5 oz)

Pro Tips for Quick Conversions

  • Rule of thumb: 500g ≈ 1.1 lb (easy to remember)
  • Shipping: 1000g ≈ 2.2 lb (common for international parcels)
  • Fitness: Track weight loss in grams for precision (e.g., 500g loss ≈ 1.1 lb)
  • Reverse Conversion: Multiply pounds by 453.592 to get grams

Gram to Kg Converter – Formula & Examples

Converting between grams and kilograms is essential for cooking, science experiments, nutrition tracking, and any metric system measurements. Our tools make it easy to switch between these common weight units.

Key Conversion: 1 kilogram = 1000 grams (exact)

Our grams to kilograms converter helps with:

  • Quick g to kg calculations for recipes
  • Scientific and laboratory measurements
  • Nutritional information conversion
  • Precise decimal results

Grams to Kilograms Converter

Type any value in grams to see kilogram equivalent (e.g., 1000g = 1kg)

Grams to Kilograms Conversion Chart

Common gram and kilogram conversions:

Grams (g)Kilograms (kg)Common Usage
100g0.1kgButter/stick measurements
500g0.5kgPackage of pasta/rice
1000g1kgStandard kilogram weight
1500g1.5kgBag of sugar
2000g2kgBag of flour

Note: For precise conversions, remember 1 gram = 0.001 kilogram exactly

How to Convert Grams to Kilograms Manually

Conversion Formula

1 kilogram = 1000 grams

kilograms = grams ÷ 1000

This exact conversion is fundamental to the metric measurement system.

Step-by-Step Example

1

Start with grams value

Example: Convert 2500 grams to kilograms

2

Divide by 1000

2500 ÷ 1000 = 2.5

3

Result in kilograms

2500g = 2.5kg

Quick Estimation Method

For rough gram to kilogram conversions:

  • Move decimal point 3 places left (1000g → 1.000kg)
  • 500g = 0.5kg (half of 1000g)
  • 100g = 0.1kg (one-tenth of 1000g)
  • Add them together (1600g = 1000g + 500g + 100g = 1.6kg)
1 kg how many grams

1 kilogram is equal to 1,000 grams.

500 grams is equal to 0.5 kilograms.

1 gram is equal to 0.001 kilograms.