Lifestyle & Everyday Calculators

Free everyday lifestyle calculators for shoe size, ring size, bra size, BAC, hair growth, sleep cycles, and household math. Runs in your browser, no signup.

16 free tools

Bra Size Calculator

Find your bra size in US, UK, and EU from underbust and bust measurements.

Shoe Size Converter

Convert shoe sizes between US, UK, and EU for men, women, and kids.

Ring Size Converter

Convert ring sizes between US, UK, EU, and millimeter diameter instantly.

Dress Size Calculator

Find your US, UK, and EU dress size from bust, waist, and hip measurements.

Hat Size Calculator

Find your hat size from head circumference in US, UK, and EU sizing.

Belt Size Calculator

Convert your waist measurement to the correct belt size with EU conversion.

BAC Calculator

Estimate blood alcohol content using the Widmark formula. Shows impairment level and time to sober.

Sunscreen Calculator

Calculate how much sunscreen to apply per body area and how often to reapply.

Hair Growth Calculator

Find out how many months it will take to grow your hair to a target length.

Weighted Blanket Calculator

Find the ideal weighted blanket weight based on 10% of your body weight.

Audiobook Speed Calculator

Calculate your adjusted listening time and time saved at any playback speed.

Shower Cost Calculator

Calculate the water and energy cost of a shower based on duration and local rates.

Toilet Paper Calculator

Calculate how many days your toilet paper supply will last based on household size.

Electricity Cost Calculator

Calculate daily, monthly, and yearly electricity cost for any appliance by wattage and hours of use.

Wind Chill Calculator

Calculate the feels-like temperature from air temperature and wind speed using the NWS wind chill formula.

Heat Index Calculator

Calculate the feels-like temperature from air temperature and humidity using the NWS heat index formula.