Tools Portal / AGRI

Brine Concentration Calculator

Calculate salt needed from a target % with %w/w and %w/v modes, plus initial salinity support.

Calculate salt needed from a target % with %w/w and %w/v modes, plus initial salinity support. [brine / salinity / salt]

brine / salinity / salt

\(V_{\mathrm{stock}} = \frac{V_{\mathrm{final}}}{D}\)

Rope Length Calculator

Estimate mooring rope length from water depth, tide range, scope ratio, and safety factors.

Estimate mooring rope length from water depth, tide range, scope ratio, and safety factors. [mooring / scope]

mooring / scope

Significant Figures Checker

Validate significant figures, scientific notation, and rounding rules for lab/report values.

Validate significant figures, scientific notation, and rounding rules for lab/report values. [sig figs / rounding]

sig figs / rounding

Molecular Weight Calculator

Calculate molar mass and elemental composition (mass %) from a chemical formula. Hydrates supported with copy/CSV/share URL.

Calculate molar mass and elemental composition (mass %) from a chemical formula. Hydrates supported with copy/CSV/share URL. [molar mass / composition]

molar mass / composition

\(\mathrm{Rate} = \frac{N_{\mathrm{seed}}\times W_{1000}}{G}\)

pH/pOH Calculator

Quick pH calculator for pH, pOH, and hydrogen ion concentration conversion with formulas and notes.

Quick pH calculator for pH, pOH, and hydrogen ion concentration conversion with formulas and notes. [pH / pOH / [H+]]

pH / pOH / [H+]

\(x_{\mathrm{target}} = x_{\mathrm{input}} \times k\)

m² ↔ tsubo ↔ tatami Converter

Convert length and area units with a required tatami size, plus a printable reference table.

Convert length and area units with a required tatami size, plus a printable reference table. [m² / tsubo / tatami]

m² / tsubo / tatami

Rebar Pitch Calculator

Calculate count ↔ pitch, edge offsets, and coordinate lists for bar layouts.

Calculate count ↔ pitch, edge offsets, and coordinate lists for bar layouts. [Pitch / Count]

Pitch / Count

Right Angle & Diagonal Checker

Compute theoretical diagonals from sides or 3-4-5 and compare with measured values.

Compute theoretical diagonals from sides or 3-4-5 and compare with measured values. [3-4-5 / Diagonal]

3-4-5 / Diagonal

\(Y = A \times y\)

Anchor Bolt Layout

Convert count ↔ pitch with offsets, centered/flush rules, and remainders.

Convert count ↔ pitch with offsets, centered/flush rules, and remainders. [Anchor / Layout]

Anchor / Layout

\(L = f(\mathrm{pH_{now}}, \mathrm{pH_{target}}, \mathrm{buffer})\)

Slope/Grade Calculator

Convert rise/run, percent, degrees, and 1:n ratios in one screen.

Convert rise/run, percent, degrees, and 1:n ratios in one screen. [Slope / Grade]

Slope / Grade

\(\vec{m} = A^{-1}\vec{t}\)

Tile/Flooring Layout Calculator

Estimate cut widths, counts, and waste. Compare balanced vs minimum-waste layouts.

Estimate cut widths, counts, and waste. Compare balanced vs minimum-waste layouts. [Layout / Waste]

Layout / Waste