Lifestyle & Everyday Calculators

14 free everyday calculators for sizing, BAC, hair growth, and household math. No signup required.

14 free tools

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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