All Number Tools
Percentage Calculator
Calculate percentages, percentage change and reverse percentages.
VAT Calculator
Add or remove UK VAT using any VAT rate.
Mortgage Calculator
Estimate monthly repayments for a repayment mortgage.
Compound Interest Calculator
Estimate future savings with interest and monthly deposits.
BMI Calculator
Calculate body mass index from height and weight.
Calorie Calculator
Estimate daily maintenance calories.
Flooring Calculator
Work out flooring area, wastage and packs required.
Paint Calculator
Estimate litres of paint required for walls and coats.
Random Number Generator
Generate one or more random numbers in a chosen range.
Prime Number Checker
Check whether a number is prime and see its factors.
Binary Converter
Convert decimal to binary and binary to decimal.
Attendance Calculator
Calculate attendance percentage and days needed to hit a target.
Popular calculators
VAT, percentage, mortgage and BMI calculators are good first tools for search traffic because they answer common, repeatable questions quickly.