Everyday Calculators

Friendly and broad, suitable for everyday questions and miscellaneous calculations.

Bra Size Calculator UK

Use this Bra Size Calculator UK to determine your UK band size, cup letters, sister sizes, and double-letter progressions using body measurements.
Calculate Now

Female Delusion Calculator UK

Use this Female Delusion Calculator UK to estimate the statistical probability of finding a male partner using ONS demographic data, height, income, and single status.
Calculate Now

Male Delusion Calculator UK

Use this Male Delusion Calculator UK to estimate the statistical probability of finding a female partner using ONS demographic data, height, income, and single status.
Calculate Now

TikTok Shop Fee Calculator UK

Use this TikTok Shop Fee Calculator UK to estimate net seller bank payouts, platform commission deductions, creator affiliate fees, fulfillment costs, and profit margins.
Calculate Now

How Does It Work?

Our family calculators make planning simple. Just pick a tool, enter a few details, and get instant results tailored to your situation. Use these insights to make confident decisions about childcare, parental leave, and family finances.

01

Choose Calculator

Pick the tool you need, from childcare costs to maternity or paternity pay.
02

Enter Your Details

Provide basic information such as income, child age, and leave plans.
03

Get Results

View accurate calculations tailored to your family situation.
04

Plan Your Budget

Use your results to budget, claim benefits, or make smart family decisions.

About Us

Family life comes with many important financial and planning decisions. How much will childcare cost? What maternity or paternity pay can you expect? How should you plan parental leave or budget for your growing family? These questions often have answers that can be calculated, yet many parents struggle to find clear tools that explain the numbers simply. At Family Calculator, we build simple tools designed for UK parents to turn complex rules around childcare, parental pay, and a wide array of family-oriented matters into clear answers anyone can understand.

We believe every parent should have access to the numbers they need to plan their family life with confidence.

Using Calculator