Introduction
The Scaler currency conversion system standardizes monetary inputs across assets, jurisdictions, and sources by converting cost-related data into a single portfolio reporting currency. Conversion is applied only where methodological consistency exists (costs, consumption, and roadmap measures) and intentionally excluded where financial teams rely on proprietary conversion rules (valuation-related fields).
Exchange-rate sources
Scaler sources exchange rates through the Frankfurter API, an open-source service that provides historical foreign-exchange reference rates. Frankfurter derives its data from institutional and non-commercial bodies such as the European Central Bank (ECB).
ECB reference rates:
- Are updated around 16:00 CET each working day
- Are based on a daily concertation procedure among European central banks
- Are intended for informational—not transactional—use
- Represent widely recognized benchmark values for cross-border comparison
Scaler retrieves and stores monthly reference rates for all major global currencies dating back to 2014.
Scope of conversion
Converted categories
Scalar applies exchange-rate logic to:
- Roadmap measure cost fields (e.g.,
total cost,cost - landlord)
- Utility-cost fields such as
cost
- Any cost field where
currencyis explicitly selectable
These values are converted into the portfolio’s reporting currency.
Non-converted categories
Financial valuation indicators are not automatically converted:
- Reporting Data > Reporting Details
Gross asset value,Gross rental income
- Financial Data
- e.g.
Market value,Turnover,CAPEX
- Other portfolio-level valuation metrics
These values reflect methodologies external to Scaler, and the platform respects the financial team’s own FX assumptions.

Backend conversion methodology
Single-month values
When a cost corresponds to one month:
Converted Value=Input ValueFX Rate_Month\text{Converted Value} = \frac{\text{Input Value}}{\text{FX Rate\_Month}}
Converted Value=FX Rate_MonthInput Value
Cross-month values
When a cost spans multiple months:
Average FX Rate=∑FX Rates for MonthsNumber of Months\text{Average FX Rate} = \frac{\sum \text{FX Rates for Months}}{\text{Number of Months}}
Average FX Rate=Number of Months∑FX Rates for Months
Converted Value=Input ValueAverage FX Rate\text{Converted Value} = \frac{\text{Input Value}}{\text{Average FX Rate}}
Converted Value=Average FX RateInput Value
The system chooses the rate(s) that align with the date range associated with the cost.
Roadmap measures
Roadmap measures may be recorded in any supported currency. The platform converts all costs into the portfolio reporting currency to support:
- Aggregated Roadmap analytics
- CAPEX visualizations
- Multi-asset comparisons

Utility-cost data
Utility-cost entries now include a currency field. This allows costs to be recorded in their native currency per asset.
Scaler automatically converts these values using the backend exchange-rate system.

Portfolio reporting currency
The portfolio Default currency is defined in Portfolio Data Collection Settings. All converted values across roadmap measures, utility costs, and related analytics align with this currency.
Analytics behavior
The Analytics Portal displays converted values exclusively in the reporting currency to ensure consistent interpretation across:
- CAPEX graphs
- Cumulative-annual investment visuals
- Energy spend intensity
- Any cost-based metric or visualization

Data export behavior
Spend values and aggregated cost values exported from Scaler reflect the converted amounts in the portfolio Default currency.
Underlying input values and currencies are still available when exporting raw input data via the Scaler Spreadsheet.
Rationale for exclusions
Financial valuation fields are excluded from automated conversion because:
- Organizations may use year-end, quarterly, or deal-specific FX assumptions.
- Financial teams may rely on audited values or internal conversion rules.
- Automated conversion could overwrite or conflict with established methodologies.
Scalar therefore uses the portfolio reporting currency directly for valuation metrics.
