All Tools
Every calculator runs entirely in your browser. No account required. Results are not transmitted or stored anywhere.
Core Calculators
DWDM Link Budget Planner
Hop-by-hop topology builder with cascaded OSNR analysis. Supports 400G QPSK and 800G PS-16QAM with non-linear fiber penalties (G.653/G.655) and EDFA noise budgeting.
OSNR Calculator
Standalone OSNR budget calculator with amplifier chain analysis, system penalty breakdown, and margin allocation per ITU-T G.975.1.
Fiber Loss Calculator
Span loss budget with attenuation coefficient, connector loss, and splice loss modeling for G.652, G.654, and G.655 fiber types.
Spectral & Power Tools
dBm / Power Converter
Convert between dBm, dBW, watts, and milliwatts. Includes an optical power budget reference table.
ITU-T Grid Calculator
C-Band and L-Band wavelength/frequency lookup with 50 GHz and 100 GHz ITU-T G.694.1 grid spacing.
Advanced Tools — Roadmap
GSNR Calculator
Generalized SNR analysis including non-linear interference noise.
Q Factor / BER Estimator
BER estimation from OSNR or Q factor with FEC threshold mapping.
ROADM Planner
Multi-degree ROADM node insertion loss and colorless/directionless design.