Dez Calton

CalcHub was founded by Dez Calton, a digital marketing professional with over 15 years’ experience analysing business, finance and performance data. The aim of CalcHub is simple: create free calculators and practical guides that explain how everyday calculations work without unnecessary jargon.

Articles: 10

Maths & Percentages

How Percentage Calculators Work: Formulas, Examples and Mistakes to Avoid

A clear guide to percentage calculators, explaining the main formulas, real examples, and the most common mistakes people make when working out percentages.

Dez Calton
August 24, 2026

Business & Marketing

UK VAT Explained: Add VAT, Remove VAT and Avoid Common Errors

A clear UK guide to VAT, covering how to add VAT, remove VAT from a gross price, and avoid common calculation mistakes in pricing, invoices, and bookkeeping.

Dez Calton
August 24, 2026

Times, Dates & Conversions

Why Humans and Dogs Age Differently: The Science of Biological Time

For decades, we’ve been told that one dog year equals seven human years. But veterinary science proves this linear math is completely wrong. Discover the fascinating science of biological time, why a dog's size dictates how fast they age, and the true mathematical formula for calculating their human age.

Dez Calton
August 24, 2026

Personal, Lifestyle & Fitness

BMR vs TDEE: The Mathematical Difference Between Resting and Active Calories

In the world of health and fitness, BMR and TDEE are often confused, but they measure entirely different things. Discover the mathematical difference between the calories your body burns at rest, and the energy required to fuel your daily active lifestyle.

Dez Calton
August 24, 2026

Money, Finance & Mortgages

The Maths Behind Credit Card Minimum Payments: Why Your Balance Isn’t Dropping

If you pay your credit card minimum every month but your balance barely moves, you aren't alone. Discover the objective mathematics behind credit card interest, how lenders calculate your minimum payment, and why understanding the numbers is the first step to financial clarity.

Dez Calton
August 24, 2026

Money, Finance & Mortgages

How to Calculate Your Personal Inflation Rate (Are Your Bills Outpacing Your Pay?)

You hear about the national inflation rate on the news every day, but it rarely matches what you see on your supermarket receipts. Discover how to calculate your 'Personal Inflation Rate' to find out exactly how much your unique cost of living has jumped and whether your latest pay rise actually covers it.

Dez Calton
August 24, 2026

Business & Marketing

Why Your Conversion Rate is the Most Important Metric for Scaling Your Business

Most businesses try to scale by buying more traffic, but that is like pouring water into a leaky bucket. Discover why improving your conversion rate is the true secret to doubling your revenue without increasing your ad spend.

Dez Calton
August 24, 2026

Times, Dates & Conversions

Cooking Conversions Explained

Understanding how common cooking measurements relate to one another helps ensure consistency, accuracy and better results in the kitchen.

Dez Calton
August 24, 2026

Money, Finance & Mortgages

Understanding UK Stamp Duty Thresholds and Bands

This guide explains how stamp duty works in England and Northern Ireland, how the bands are applied and why the total cost is often higher than buyers expect.

Dez Calton
August 24, 2026

Money, Finance & Mortgages

How Compound Interest Really Works Over Time

This guide explains how compound interest works, why time matters more than most people expect and how to interpret compound growth realistically rather than optimistically.

Dez Calton
August 24, 2026

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CalcHub is home to a wide range of quick and accurate online calculators. From percentages and VAT to finance and personal tools, everything is designed to work clearly and reliably across devices.

CalcHub calculators are built and reviewed to provide clear estimates for everyday use.