Portal Alat / CHEM

Concentration Converter

Convert concentration units (% , ppm, mg/L, mol/L) with optional density-based mass/volume conversion.

Convert concentration units (% , ppm, mg/L, mol/L) with optional density-based mass/volume conversion. [ppm / % / mol/L]

ppm / % / mol/L

\(c = \frac{n}{V}\)

Chemical Unit Converter

Convert pressure, temperature, concentration (ppm↔mg/L), and viscosity (cP↔mPa·s) in one screen.

Convert pressure, temperature, concentration (ppm↔mg/L), and viscosity (cP↔mPa·s) in one screen. [ppm / bar / cP]

ppm / bar / cP

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

Dilution Calculator (Single & Serial)

Compute stock and solvent volumes with C1V1=C2V2 and generate serial dilution tables from step factors.

Compute stock and solvent volumes with C1V1=C2V2 and generate serial dilution tables from step factors. [C1V1=C2V2 / Serial]

C1V1=C2V2 / Serial

\(C_1V_1 = C_2V_2\)

Density Conversion (Mass ↔ Volume)

Convert mass and volume using density, with optional coefficient-based temperature correction.

Convert mass and volume using density, with optional coefficient-based temperature correction. [ρ / m / V]

ρ / m / V

\(\rho = \frac{m}{V}\)

Stoichiometry Calculator

Calculate limiting reagent, excess, theoretical yield, and percent yield from coefficients and input amounts (g/mol/M×L).

Calculate limiting reagent, excess, theoretical yield, and percent yield from coefficients and input amounts (g/mol/M×L). [limiting reagent / yield]

limiting reagent / yield

\(n = \frac{m}{M}\)

Solution Preparation Table

Calculate reagent mass/volume from target concentration and final volume, with purity correction, multi-solute rows, scale-up table, and print/CSV.

Calculate reagent mass/volume from target concentration and final volume, with purity correction, multi-solute rows, scale-up table, and print/CSV. [solution prep / scale]

solution prep / scale

Batch Scale-Up Calculator

Scale formulations while preserving ratios. Apply loss/yield, minimum charging unit rounding, and export CSV in one flow.

Scale formulations while preserving ratios. Apply loss/yield, minimum charging unit rounding, and export CSV in one flow. [scale-up / loss / rounding]

scale-up / loss / rounding

\(x' = x \times \frac{B}{A}\)

Uncertainty Calculator

Combine measurement uncertainties and report expanded uncertainty with confidence factor.

Combine measurement uncertainties and report expanded uncertainty with confidence factor. [uncertainty / k-factor]

uncertainty / k-factor

CSV to JSON Converter

Convert CSV to JSON with header detection, type inference, and empty cell handling.

Convert CSV to JSON with header detection, type inference, and empty cell handling. [CSV -> JSON]

CSV -> JSON

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

YAML↔JSON↔TOML Converter

Convert between YAML/JSON/TOML with auto-detect, formatting, and copy.

Convert between YAML/JSON/TOML with auto-detect, formatting, and copy. [YAML ⇄ JSON ⇄ TOML]

YAML ⇄ JSON ⇄ TOML

\(c = \frac{n}{V}\)

JSON Key Sorter

Sort JSON keys A→Z (all levels or top-level only) for clean diffs.

Sort JSON keys A→Z (all levels or top-level only) for clean diffs. [JSON A → Z]

JSON A → Z

\(C_1V_1 = C_2V_2\)

Formwork Area Calculator

Calculate formwork area by member type with opening deduction rules.

Calculate formwork area by member type with opening deduction rules. [Formwork / m²]

Formwork / m²

\(\rho = \frac{m}{V}\)

Concrete Volume + Truck Estimate

Sum volumes by shape, add loss, and estimate ready-mix truck loads.

Sum volumes by shape, add loss, and estimate ready-mix truck loads. [Volume / Trucks]

Volume / Trucks

\(n = \frac{m}{M}\)

Scaffolding Area Estimate

Estimate scaffolding area from perimeter × height × coverage, plus accessories.

Estimate scaffolding area from perimeter × height × coverage, plus accessories. [Perimeter × Height]

Perimeter × Height

\(M = \sum_i n_i A_i\)

Voltage Drop Calculator

Estimate voltage drop and review cable size candidates by drop only.

Estimate voltage drop and review cable size candidates by drop only. [Voltage / Drop]

Voltage / Drop

Formulation Ratio Calculator

Build weight/volume ratio tables, auto-scale to a target total, and check tolerance ranges.

Build weight/volume ratio tables, auto-scale to a target total, and check tolerance ranges. [Ratio / Blend]

Ratio / Blend

\(x' = x \times \frac{B}{A}\)

Roof Area Calculator (Pitch)

Compute sloped roof area from plan dimensions, pitch, and overhangs.

Compute sloped roof area from plan dimensions, pitch, and overhangs. [Roof / Pitch]

Roof / Pitch

Material Loss Calculator

Apply waste/yield and salvage rates, then round up by order unit.

Apply waste/yield and salvage rates, then round up by order unit. [Loss / Yield]

Loss / Yield

Reorder Point Calculator

Estimate safety stock and reorder point from demand and lead time variability.

Estimate safety stock and reorder point from demand and lead time variability. [Safety Stock / ROP]

Safety Stock / ROP

\(\mathrm{pH} = -\log_{10}[H^+]\)

URL Encode/Decode

Encode or decode URLs and query values with percent-encoding.

Encode or decode URLs and query values with percent-encoding.

percent-encoding

\(m_i = M_{\mathrm{total}} \times r_i\)