Apps Like NPKalc - Fertilizer Calculator for iPhone and iPad
Calculate doses and units
Calculate requirements for granular and liquid types using various unit measurements. Input soil test results and desired nutrient levels. pplication rates for lawns, gardens, and crops. Export results for record-keeping.
by Barton Cone★ 4.39 ratingsUtilitiesFreeData updated 2026-09-06
Calculate determinants for 2x2, 3x3, and NxN square matrices. Input entries manually or via file. Use built-in algorithms to compute results. Display final value clearly.
A utility calculates concrete or mortar requirements. Enter project dimensions to determine cement, sand, and gravel amounts. Results are provided in bags or liters based on mixer type. Includes a common settings tab for all projects.
Convert to kilowatts and vice versa using formulas for DC, single-phase AC, and three-phase AC. Input values and select voltage type to calculate power. Display results clearly with unit options.
Calculate decking and flooring materials with area, board runs, spacing, and waste allowance. Generate material takeoffs for boards and joists. Measure roof coverage, sheet counts, overhangs, pitch, angle, and rafter lengths.
Calculate for isotropic materials using two input parameters. Input material properties to derive Young's modulus, Poisson's ratio, and shear modulus. View results and compare with standard material data.
Calculate areas between map pins. Create and move pins to adjust the . Locate yourself and add pins with one click. Search for places. Save and load data. Choose between standard, satellite, and hybrid map views.
Calculate and tips by entering total amount, tip percentage, and number of people. payments evenly among multiple users. Display results instantly. Support dark mode.
Calc allows users to estimate pipe weight and total cost. Input dimensions and material properties to calculate weight and cost in real time. Switch between Metric and Imperial units. Add and manage custom material densities and prices.
Calculate vibration frequencies for rotating machinery components including induction motors, gears, and bearings. Perform vibration severity tests based on ISO 10816-3.
Perform basic arithmetic operations. Switch between currency types. Calculate percentages and use memory functions. Input and display results in multiple languages.
Calculate pre- prices and percentages. Determine savings on products. Find reduced prices and compare original costs. Input values to receive accurate results.
Calculate the using inputs for the longest side, shorter side, or combined length. Perform instant calculations with support for up to 16 decimal places and various units. Copy results to another and view the formula as a reference.