Fiber optic calculators,built by the people who manufacture the cable.
Two browser-based tools for planning and validating a fiber optic link. Enter your values — the results update instantly, with industry-standard formulas and the same loss presets your OLT / GPON datasheet uses. Nothing is sent to a server; everything is computed in your browser.
Pick a tool
7-step full link budget — fiber, connectors, splices, splitters, margin
Fiber Link Loss Budget Calculator
Model an end-to-end fiber link. Enter cable distance, per-km loss at your operating wavelength, connector pairs, splices, splitter and other component losses, plus transmitter power and receiver sensitivity. We compute the total cable attenuation, link loss budget, and the system performance margin you have left after the repair allowance.
- Plan a new PON or point-to-point link before ordering gear
- Validate a link against TIA-568 / ITU-T loss budgets
- Check headroom before adding splitter stages
Quick estimate — theoretical splitter loss plus excess loss
Optical Splitter Loss Calculator
A single-purpose tool for estimating the insertion loss of a passive PLC or FBT splitter. Enter the number of output ports (2, 4, 8, 16, 32, 64) and the excess loss from the splitter datasheet. We return the ideal logarithmic split loss plus the total including excess.
- Spec a PON splitter for an FTTH deployment
- Check whether a cascade of splitters still fits the budget
- Teach new techs the 10·log₁₀(N) split-loss rule
T1 through T7,grouped by the job
Two calculators are live today; the rest are on the roadmap below. Tell us which you need next and we'll prioritize it.
T1 · Lookup & Conversion
Quick references every fiber tech reaches for — color codes, connector IDs, and unit conversions.
Fiber Color Code Lookup (TIA-598)
Fiber/tube number → jacket color and position, both directions.
Connector Type Identifier
Pick what the connector looks like → spec, polish type, and where it is used.
Optical Unit Converter
dB ↔ dBm ↔ mW, plus µm / nm / km conversions in one place.
Fiber Attenuation vs Distance
Fiber type + wavelength + length → expected attenuation.
T2 · FTTH / PON Planning
Power budgets, splitter losses, and split-architecture design for last-mile deployments.
Optical Splitter Loss Calculator
Enter output ports and excess loss → ideal and total insertion loss for PLC and FBT splitters.
Open toolFiber Link Loss Budget Calculator
Fiber attenuation, connectors, splices, splitter, Tx power, and Rx sensitivity → end-to-end system margin.
Open toolGPON / EPON Power Budget Calculator
OLT Tx power + fiber length + split ratio → link margin and class compliance.
Two-Stage Split Designer
Subscriber count + distances → recommended 1st/2nd-level split architecture.
FTTH Project BOM Estimator
Homes passed + topology → bill of materials with one-click quote request.
T3 · OSP Field Engineering
Span, sag, bend-radius, and hardware math for aerial and buried outside plant.
ADSS Span / Sag Calculator
Span + tension + wind load → sag value and compliance check.
Cable Bend Radius Checker
Cable model + install environment → minimum bend radius.
Outdoor Cable Recommender
Environment (aerial / buried / duct / power corridor) + distance → recommended cable family.
Vibration Damper Spacing
Span + wind zone → damper count and positions.
T4 · Selection Assistants
Guided pickers that turn your project parameters into a concrete product recommendation.
Single Mode vs Multimode Selector
Distance + data rate + budget → SM/MM recommendation with OM/OS grade.
Fusion Splice vs Fast Connector
Site conditions + volume → recommended termination method and labor estimate.
Indoor Cable Jacket Selector
Routing (plenum / riser / surface) + country → LSZH, Plenum, or PVC.
Data Center Media Selector
Distance + speed (100G / 400G / 800G) → OM4 / OM5 / OS2 recommendation.
T5 · Data Center / MPO
Polarity mapping and high-density BOM planning for MPO/MTP trunk builds.
MPO Polarity & Connectivity Planner
MPO-12/16/24 + Type A/B/C + port count → polarity diagram and trunk recommendation.
Data Center BOM Estimator
Rack count + speed + distances → MPO and LC patch cord BOM with quote request.
T6 · Compliance Lookup
Which certifications your market requires, and which certificates TTI Fiber can provide.
CPR / Certification Requirement Lookup
Install environment and market → required certification level (CPR Cca/Dca, CE, RoHS, UL).
TTI Certificate Finder
Product model + market → available certificates with downloads.
T7 · Project BOM & Quote
Turn a scenario into a complete bill of materials and send it straight to our sales team.
Project BOM Generator
Pick a scenario + enter scale parameters → complete bill of materials with one-click inquiry.
Quick Quote Form
Upload a drawing or fill in key parameters → straight to a TTI Fiber sales engineer.
Want to understand the numbers behind the calculators?
Our Fiber Loss & Splitter cluster on the blog walks through the theory, best practices, and real-world edge cases behind every input on these pages. Start here: