Use the Slope Calculator to find slope and line equation from two points, with worked examples and clear steps included.

Use the Triangle Calculator to find perimeter, area, and type from three sides, with clear Heron formula steps and examples.

Enter one date to find your current pregnancy week, trimester and estimated due date with the Pregnancy By Week Calculator.

Plan any creature tame with the Taming Calculator — enter the creature level to estimate food units and taming minutes fast.

Enter your last period date to find your current trimester, pregnancy week and weeks remaining with the Trimester Calculator.

Compare traditional plus-four sizing with the modern exact-band method using the True Bra Size Calculator — see both sizes.

Budget your trip with the Vegas Calculator — enter trip days, daily budget and flights to estimate the full total cost fast.

Estimate your 10-year heart attack and stroke risk with the Ascvd Risk Calculator using age, blood pressure and cholesterol.

Estimate battle stats fast with the Pokemon Calculator – enter base stat, IV, and level for a quick simplified stat preview.

Use the free Coordinate Distance Calculator to find the great-circle distance between two GPS coordinates in miles and kilometers.