The eight shelves
Every calculator sits on one of eight shelves. Open one to see its calculators.
Resin pours, dome struts, shingles.
- Epoxy Resin Calculator: How Much Resin for a Pour21.94 fl oz
- Geodesic Dome Calculator (2V Strut Lengths)5.465 ft
- How Many Shingles Do I Need? Bundles and Squares60 bundles
3 pages Open →
Cents to hertz, fret positions.
2 pages Open →
Dog years, pens, runs and coops.
- Dog Years to Human Years Calculator39.0 years
- Round Pen Calculator: Panels, Circumference and Area188.5 ft
- Chicken Coop and Run Size Calculator60 ft²
3 pages Open →
Grain bins, yields, plant stands and grow lights.
- Grain Bin Calculator: Bushels in a Round Bin11,360 bu
- Corn Yield Calculator (Bushels per Acre)186.7 bu/acre
- Plant Population Formula (Plants per Acre)34,848 plants
5 pages Open →
Buffer pH, DNA copy numbers.
- Henderson-Hasselbalch Calculator (pH from pKa)5.06
- DNA Copy Number Calculator (Copies from ng)1,852,966,388 copies
2 pages Open →
Class width, empirical rule, CV.
- Class Width Calculator for Frequency Tables8
- How to Calculate the Empirical Rule (68-95-99.7)85.00
- Coefficient of Variation (CV) Formula and Calculator19.56 %
3 pages Open →
Elo, passer rating, watts per kg.
- Elo Win Rate Calculator (Expected Score)64.01 %
- College Football Passer Rating Calculator (NCAA)152.0
- Cycling Watts per Kg Calculator3.47 W/kg
3 pages Open →
Antilogs and inverse logs.
1 page Open →